General Aptitude › Time and Work › Question #4636
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QIf A and B can complete a task in 15 days and 10 days, respectively, and they start working together but B has to leave after 2 days, and A completes the remaining work on their own, how long does it take to complete the whole task?

ID: #4636 Time and Work 170 views
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#4636Q ID
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Time and WorkTopic
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  • A 12 ✔ ✖
  • B 16 ✔ ✖
  • C 20 ✔ ✖
  • D 22 ✔ ✖
Correct Answer

Explanation

The combined work rate of A and B is 1/6 of the task per day, and they work together for 2 days,
completing 1/3 of the task.
The remaining work is 2/3 of the task, and A's work rate is 1/15 of the task per day.
Therefore, it will take A 10 days to complete the remaining work.
The total time taken for the task to be completed is 10 days + 2 days = 12 days

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